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1,511,493 W. E. BARNUM GAS ECQNOMIZER Filed Dec 21. 1.921

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from K1121: P0511 Ran? (liar/13ers Patented 14, 1924,

UNITED STATES PATENT OFFICE.

WILLIAM E. BARNUM, PORT MOODY, BRITISH GQLUMIBLfi, CANADA, OWE -HALF 10 JOHN ALEXANDER MCGONNELL. 03: IQlit'l MOODY, GAJSTADA.

ECQN

Application of December 21, 1921.

To (ZZZ ai /r0222) it may concern Be it known thatl, TILLIAM E. BARNUM, citizen of the Dominion of Canada, residing at Port Moody, in the Province of British Columbia. Canada, have invented certain new and useful Improvements in Gas Econoinizers, of which the following is a specification.

This invention relates to a gas economizer 0 for internal combustion engines of the four cycle class having a closed crank-case.

In engines of this class a considerable waste of fuel occurs by leakage past the pistons into the crai'ilc-case during their compression stroke and past the valve push rods, which leakage it is the object of this invention to retrieve and use.

The invention is particularly described in the following specification, reference being made to the drawings by which it is accompanied, in which:

Fig. l is. a vertical section on the line 1-1 in Fig. 2, and

Fig. 2 is a sectional plan on the line 2-2 in Fig. l.

The device comprises a small cylinder 2, one end of which is closed as at 3, and the other is flanged to receive a cylindrical drain cup & of diameter corresponding to that of the cylinder. Across the joint between the cylinder 2 and the drain cup 4% is a gauze screen 5 and secured in the same joint and projecting concentrically within the cylin der 2 is cylindrical screen 6 having a closed upper end.

To the body of the cylinder 2, connection is made at T with the crank-case of the en-- gine. and at 8 with connections from the valve push rod chambers. To the same cylinder, connection is made at 9 from the radiator above the water level and at 10 connect-ion. is made to the intake manifold of the engine.

The lower part of the drain cup 4 is connected at 11 to the engine exhaust pipe or manifold '13, which connection is closable with a stop-cock 12.

In operation, the suction of the engine intake connected at 10 induces a flow thereto of gas and air from the crank-case, through the connection 7, and from the valve push rod chamber through the connection 8, also a proportionate amount of aqueous vapour through the pipe 9 from the radiator. These are effectively mixed in the cylinder 2 be- Serial No. 523,957,

fore delivery to the intake to the cylii'ider, and a considerable loss 01:: gas through leakage is thereby retrieved and favourably used.

The gauze screen 6 prevents short circuiting and tends to equalize the flow from the several connections, and, with the screen 5, prevents the possible ignition of the by the connection to the exhaust when that connection is made.

The drain cup 4: is designed to receive any water that may be carried over from the radiator into the cylinder 2. It may be periodically withdrawn from the cup or the drain cock 12 may he left slightly open that it may drain continuously.

In applying the device it will preferably be placed immediately adjacent the exhaust manifold, so as to derive heat by conduction. therefrom.

The device is formed to effect a considerable saving in the oil. used, and its connection to the radiator by indrawing and mine ing with the gas a small quantity of water vapour is an effective prevention of carbon deposit in the cylinders.

Having now particularly described my invention, I hereby declare that what I claim as new and desire to be protected in by Letters Patent, is:

1. In an internal combustion engine, means for drawing gases severally from the crankcase, the push rod chambers. and the upper part of the radiator into a mixing chamber. means for mixing them in the presence of heat drawn from the exhaust, and means for delivering the mixed gases into the intake of the engine.

2. A mixing chamber for an internal. conr bustion engine, said chamber horizontally jointed adjacent the lower end, a transverse gauze screen secured in the dividing joint, means for connecting the upper part of the chamber to the crank-case, the push rod chambers and the upper part of the radiator, and to the intake of the engine, and means in the lower part of the chamber for re evaporating the water of condensation therein.

3. A mixing chamber composed of two parts horizontally jointed adjacent the lower end, a transverse gauze screen secured in the joint. means for connecting the upper part of the chamber to the crank-case, the push rod chambers and the upper part of the radiator and to the intake manifold of: the engine respectively, and means for connecting thelower part of the chamber be low the transverse screen to the exhaust of said engine.

L. A mixing chamber composed of two parts horizontally jointed adjacent the lower end, a transverse gauze screen secured in the joint, means for connecting the upper part of the chamber to the crank-case, the push rod chambers and the upper part of the radiator and to the intake manifold of the engine respectively, and means for connecting the lower part of the chamber below the trnsverse screen to the exhaust with means "for controlling passage through the exhaust conne tion.

5. A mixing chamber for an internal combustion engine horizontally jointed adjacent the lower end, a transverse gauze screen sccured in the joint, a Wire gauze bafl'le secured in the joint and conforming to the walls of the upper part of the chamber a short distance from them, means for connecting the upper part of this chamber with out the gauze bafile to the crank-case, the

push rod chambers andcto the, upper part of the radiator, and to the-intakemanifold of the engine respectively, and means for reevaporating the water of condensation from the lower part of the chamber.

6. A mixing chamber for an internal combustion engine horizontally jointed adjacent the lower end, a transverse gauze screen secured in the joint, a wire gauze battle secured in the joint and conforming to the walls of the upper part of the chamber a short distance from them, means for connecting the upper part of this chamber Without the gauze baille to the crank-case, the push rod chambers, and to the upper part of the radiator, and to the intake manifold of the engine respectively, means for reevaporating the water of condensation from the lower part of the chamber, and means for draining and re-evaporating the Water of condensation from the lower part of the chamber by connection of the same to the exhaust of said engine.

In testimony whereof, I aflix my signature.

lVILLIAM E. BARNUM. 

